These wall lanterns are made of solid thick glass, with bubbles in them reminiscent of old world charm. They appear sturdy from the glass thickness, and the metal cage seems to have decent soldering. To add the bulbs, two screws on the underside of the top need unscrewed. Instructions and hardware are included. Very simple to install, a ground wire and black and white wire, that's it. Just make sure the electric is turned off at the main. I'll post installed photos after the holidays, I have a million lights out there now. :D Overall, very nice, substantial outdoor lights!